Allow for reproducible builds

REPRODUCIBLE_BUILD=1 ./gradlew clean :build

gradle/reprod/patches/shadow/0004-Manually-shade-deps.patch

@@ -0,0 +1,54 @@
+From cfca21accce1fb3fbd32b81fb79f0363dd7b61f4 Mon Sep 17 00:00:00 2001
+From: Jonas Herzig <me@johni0702.de>
+Date: Tue, 8 Aug 2017 19:59:34 +0200
+Subject: [PATCH 4/4] Manually shade deps
+
+---
+ build.gradle | 20 +++++++++++++-------
+ 1 file changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/build.gradle b/build.gradle
+index a0d350b..b12a46d 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -12,17 +12,22 @@ repositories {
+     jcenter()
+ }
+ 
++configurations {
++    shade
++    compile.extendsFrom shade
++}
++
+ dependencies {
+ 
+     compile localGroovy()
+     compile gradleApi()
+-    compile 'org.jdom:jdom2:2.0.5'
+-    compile 'org.ow2.asm:asm:5.0.3'
+-    compile 'org.ow2.asm:asm-commons:5.0.3'
+-    compile 'commons-io:commons-io:2.4'
+-    compile 'org.apache.ant:ant:1.9.4'
+-    compile 'org.codehaus.plexus:plexus-utils:2.0.6'
+-    compile 'org.codehaus.groovy:groovy-backports-compat23:2.4.4'
++    shade 'org.jdom:jdom2:2.0.5'
++    shade 'org.ow2.asm:asm:5.0.3'
++    shade 'org.ow2.asm:asm-commons:5.0.3'
++    shade 'commons-io:commons-io:2.4'
++    shade 'org.apache.ant:ant:1.9.4'
++    shade 'org.codehaus.plexus:plexus-utils:2.0.6'
++    shade 'org.codehaus.groovy:groovy-backports-compat23:2.4.4'
+ }
+ 
+ dependencyVerification {
+@@ -42,6 +47,7 @@ dependencyVerification {
+ jar {
+     from rootProject.file('LICENSE')
+     from rootProject.file('NOTICE')
++    from (files(configurations.shade).collect {it.isDirectory() ? filesTree(it) : zipTree(it)})
+ }
+ 
+ tasks.withType(AbstractArchiveTask) {
+-- 
+2.5.5
+